Pump -hauger mechanism



Nov. 2 ,1926. 1,605,862

N. H. SOQY PUMP HANGER MECHANISM Filed July 12. 1926 #12. ATTORNEY.

Patented Nov. 2, 1926.

ATEN T NORMAN H. SOOY, OF KANSAS CITY, MISSOURI.

PUMP HANGER MECHANISM.

Application filed July 12,

My invention relates to improvements in pump hanger mechanisms.

It relates particularly to hanger mechanisms such as are commonly used to connect a reciprocative pump rod with a walk ing beam in oil well pumping structures.

In many of such structures, the hanger mechanism comprises two hanger members pivotally connected with each other by a bolt, one member being pivoted to the pump rod and the other member being pivotally seated on the walking beam.

In structures of this character, there is great side strain and wear on the pump rod unless the parts are accurately positioned, so as to divide the travel of the pivot bearing on the walking beam equally at opposite sides of the plane of travel of the pump rod. This requires skill and care, and, owing to the large sizes of the parts, it is a difficult adjustment to make, particularly by the unskilled laborers usually employed to set up the pump.

One of the objects of my invention is to provide a hanger mechanism of the kind described which can quickly and easily be properly adjusted as to stroke by unskilled persons.

A further object. of my invention is to provide novel pump hanger adjusting means, which is simple, cheap, strong, durable, not liable to get out of order, which is adapted for attachment to hanger mechanisms already in use, and which is easily applicable to and adjustable on such mechanisms;

The novel features of my invention are hereinafter fully described and claimed.

In the accompanying drawing, which illustrates the preferred embodiment of my invention,

Fig. 1 is a side elevation, partly broken away, of a common type of pumping mechanism provided with my improvement.

Fig. 2 is an enlarged side elevation of a portion of what is shown in Fig. 1

Fig. 3 is an end elevation of the same.

Fig. f is a sectional view on the line -d of Fig. 2.

Fig. 5 is an enlarged cross section, partly broken away, on the line 5- -5 of Fig. 1.

Fig. 6 is an enlarged side view of one of the bearing members and a portion of one of the strut bars.

1926. Serial No. 121,826.

Similar reference characters designate similar parts in the different views.

1 designates the walking beam of a pump, such as is used in oil well pumping structures, pivotally mounted on a horizontal axial shaft 2 supported on a pedestal 3, a part of which is shown.

l designates a vertically reciprocative pump rod, which is pivotally connected by a transverse pin 5 to the lower end of a lower hanger member 6, of any usual construction, the upper end of which is pivoted by a transverse bolt 7 to the lower end of an upper T shaped hanger member 8, the arms at the upper end of which are respectively seated in transverse grooves provided in the adjacent bifurcated end of the walking beam at the upper side thereof.

The structure so far described comprises a pump structure of usual type. With such structures, it requires care and the exercise of considerable skill to relatively locate the walking beam and pump rod, so that the center of the pivot seat of the hanger member will travel at equal distances from the plane P-P of travel of the pump rod 4. If the parts are not so adjusted, there will be great lateral strain placed upon the pump rod during its reciprocation.

To enable a proper adjustment to be quickly made of the pump rod hanger mechanism, I provide two strut members comprising two bars 9, one set of ends of which are provided with eyes disposed respectively at the outer sides of the lower hanger memher 6 and through which the bolt 7 extends. The ends of the bolt 7 are provided with nuts 10 respectively bearing against the eyes 11 of the bars 9.

Bearing means for the bars 9 are provided at opposite sides respectively of the walking beam 1, each bearing means comprising a plate 12, which may be fastened to the beam 1 by two lag screws 18. The plate 12 is provided between said lag screws with two parallel lateral flanges let between which is loosely disposed the adjacent one of said strut bars 9. The latter is provided with a threaded portion on which are fitted nuts 15, which respectively bear against washers 16 mounted on the adjacent rod 9 ill and bearing respectively against the opposite ends of-the flanges 14. To hold the bar 9 from lateral displacement from the flanges 1 1, the rear ends of the latter may be provided each with a projection 17 which extend over the adjacent washers 16, Figs. 2, 4:, 5 and 6.

In the assembling of the apparatus, the walking beam 1, pump rod 4., hanger members 6 and 8 and bolt 7 are mounted in the usual manner at approximately their operative positions. The strut bars then have their eyes 11 mounted on the bolt 7 and the nuts 10 are then mounted on the bolt 7. The plates 12 are fastened in approximately their proper positions with the bars 9 disposed respectively between the two pairs of flanges 1 1, the inner nuts 15 and inner washers 16 having been first mounted thereon. Preliminarily it is best to fasten each plate 12 with but a single lag screw 13 to enable the plate to swivel when adjustment of the bar 9 is being made therein The washers 16 and the nuts 15 are then mounted on the bolts 9 with the washers 16 adjacent the adjacent ends of the bolts disposed at the inner sides of the projections 17.

The two nuts on each bolt 9 are then adjusted so that the bars 9 will move the pivot bolt 7 to a position such that as it travels in the arch A-A. Fig. 1, it will pass through a point, at the middle of the stroke, located as far to the left of the plane P-P, as are the points at the end of its stroke at the right of the plane P-P. The lateral strain on the pump rod 4 will thus be equalized, and it will be bent to the least possible amount.

If the stroke of the walking beam and pump rod should afterwards be increased, the nuts 15 are adjusted so as to force the bars 9 longitudinally further from the axis of the walking beam. and to a pointat which the bolt 7 will during a stroke, be as far to the right as it passes to the left of the pump rod plane P-P.

After the adjustments have been properly made, the other two lag screws 13 may be inserted through the plates 12 and into the beam 1 to firmly secure the plates 12 in the adjusted positions.

To adjust the rods 9, in case the stroke of the pump rod is shortened, the operation just described is repeated, excepting the nuts 15 are adjusted to pull the rods 9 toward the axis of the walking beam, until the bolt 7 reaches equal distances at opposite sides of the plane P--P.

I do not limit my invention to the structure shown and described, as modifications, within the scope of the appended claims, may be made without departing from the spirit of mv invention.

\Vhat I, claim is 1. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, and two hanger members pivoted to each other and respectively pivoted to the walking beam and pump rod, of means connecting one of said members and said walking beam by which the pivotal point between said members may be adjusted toward and from the axis of said walking beam.

2. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, and two hanger members pivoted to each other and respectively pivoted to the walking beam and pump rod, of bearing means carried by said beam, and means including a bar longitudinally adjustable on said beam toward and from the axis of the beam and having a bearing against said bearing means and the member pivoted to said walking beam.

3. In. a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respectively pivoted to said walking beam and to said pump rod, and a bolt pivotally connecting said members with each other, of

means connecting with said bolt and said walking beam by which said bolt and with it the adjacent ends of said hanger members may be adjusted toward and from the pivoted to said walking beam.

4:. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respectively pivoted to said walking beam and to said pump rod, and a bolt pivotally connecting said members with each other, of bearing means on said walking beam, and a bar engaging and movable with said bolt and longitudinally adjustable on said hearing means toward and from the axis of said walking beam.

5. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respectively pivoted to said walking beam and to said pump rod, and a bolt pivotally con necting said members with each other, of a bar having an eye through which said bolt extends and adjustable with said bolt and the adjacent ends of said members toward and from the axis of said walking beam, and means carried by said beam against which said bar has a bearing.

6. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respectively pivoted to said walking beam and to said pump rod, and a bolt pivotally connecting said members with each other, of a bearing member mounted on said walking beam, and a bar engaging and movable with said bolt toward and from the axis of said walking beam, and longitudinally adjustable on and having abearing against said bearing member. I

7. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respec tively pivoted to said walking beam and to said pump rod, and a bolt pivotally connecting said members with each other, of a bearing member carried by said walking beam, and a bar having an eye through which said bolt extends and adjustable with said bolt and the adjacent ends of said hanger members toward and from the axis of said walking beam and having a thread ed end portion adjustable lengthwise with respect to said bearing member, and having two nuts respectively bearing against opposite sides of said-bearing member.

8. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respectively pivoted to said walking beam and to said pump rod, and a bolt pivotally connee-ting said members with each other of bearing means on said walking beam, and two bars bearing against said bearing means and engaging and adjustable with said bolt toward and from the axis of said walking beam.

9. In a pump hanger mechanism, the combination with a walking beam, a reciprocative pump rod, two hanger members respec tively pivoted to said walking beam and to said pump rod, and a bolt pivotally connecting said members with each other, of two bearing members respectively mounted on opposite sides of said walking beam, and two bars havingeyes at one set of ends through which said bolt extends and adjustable with said bolt toward and from the axis of said walking beam, and respectively engaging and having bearing against said bearing members.

In testimony whereof I have signed my name to this specification.

NORMAN H. SOOY. 

